Poly(Ionic Liquid)‐Derived Carbon with Site‐Specific N‐Doping and Biphasic Heterojunction for Enhanced CO2 Capture and Sensing

Abstract CO 2 capture is a pressing global environmental issue that drives scientists to develop creative strategies for tackling this challenge. The concept in this contribution is to produce site‐specific nitrogen doping in microporous carbon fibers. Following this approach a carbon/carbon heterojunction is created by using a poly(ionic liquid) (PIL) as a “soft” activation agent that deposits nitrogen species exclusively on the surface of commercial microporous carbon fibers. This type of carbon‐based biphasic heterojunction amplifies the interaction between carbon fiber and CO 2 molecule for unusually high CO 2 uptake and resistive sensing.